Yeah, I was worried the game was way too easy when I was making it, and my friend blasted through it without a problem and said it got a lil boring, so I turned up the difficulty... and it might have been too much lol. If you try to make another run at it, my biggest tip is to maximize where your stardust buff is going, putting it on a side where lots of enemies are spawning is a huge buff to your cash at the end of a wave. I'm glad you enjoy it regardless though!!!
yeah, the music was for the jam, im surprised as anyone i was able to put it together so quickly. and the sample is from sonic & knuckles! the main menu just uses a genesis plugin I have lol.